Sushi chain pays record $3,599 per pound for bluefin tuna

CaptionBurger King's bacon sundae

Noel Barnhurst / Burger King / Associated Press

Yes, that's bacon on that ice cream. Burger King, the world's second-biggest burger chain, introduced the bacon sundae as part of its summer menu.More on Burger King's effort to win over your taste buds: Get that with a side of sweet potato fries.

Yes, that's bacon on that ice cream. Burger King, the world's second-biggest burger chain, introduced the bacon sundae as part of its summer menu.More on Burger King's effort to win over your taste buds: Get that with a side of sweet potato fries. (Noel Barnhurst / Burger King / Associated Press)

The Heart Attack Grill has made headlines with its fatty foods -- meals that regularly weigh in at nearly 10,000 calories. It's a lifestyle that carries risk -- even the owner says so. The grills' record-setting Quadruple Bypass burger weighs in over three pounds and has nearly 200 calories per ounce. That works out to more than 9,500 calories. More: Customer at Heart Attack Grill suffers heart attack Owner calls customers risk-takers

The Heart Attack Grill has made headlines with its fatty foods -- meals that regularly weigh in at nearly 10,000 calories. It's a lifestyle that carries risk -- even the owner says so. The grills' record-setting Quadruple Bypass burger weighs in over three pounds and has nearly 200 calories per ounce. That works out to more than 9,500 calories. More: Customer at Heart Attack Grill suffers heart attack Owner calls customers risk-takers (Samson Loo / Flickr)

The company will serve the fish at regular prices of 128 to 398 yen – or $1.47 to $4.56 – per piece at its Sushi Zanmai restaurants, according to the Japan Times.

Stocks of bluefin tuna have plunged in oceans worldwide. Environmentalists often accuse the uber-competitive auction of encouraging a culture overfishing to satiate demand for the fish.

Bluefin is the most valuable fish in the world, popular for its fatty belly meat, according to advocacy group Oceana. Western Atlantic bluefin tuna populations have fallen more than 82%, according to the group.

As few as 25,000 individual mature Bluefin tuna remain, according to the International Commission for the Conservation of Atlantic Tunas.